<template>
    <view v-if="goods_info.goods_name" class="goods-detail-container">
        <!-- 轮播图 -->
        <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
            <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
                <image :src="item.pics_big" @click="preview(i)"></image>
            </swiper-item>
        </swiper>
        <!-- 商品信息区域 -->
        <view class="goods-info-box">
            <view class="price">
                ￥{{goods_info.goods_price}}
            </view>
            <view class="goods-info-body">
                <view class="goods-name">
                    {{goods_info.goods_name}}
                </view>
                <view class="favi">
                    <uni-icons type="star" size="18" color="gray"></uni-icons>
                    <text>收藏</text>
                </view>
            </view>
            <view class="yf">
                快递：免运费
            </view>
        </view>
        <rich-text :nodes="goods_info.goods_introduce"></rich-text>

        <!-- 商品导航组件 -->
        <view class="goods_nav">
            <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick"
                @buttonClick="buttonClick" />
        </view>
    </view>
</template>

<script>
    import {
        mapState,
        mapMutations,
        mapGetters
    } from 'vuex'

    export default {
        computed: {
            ...mapState('m_cart', ['cart']),
            ...mapGetters('m_cart', ['total'])
        },
        watch: {
            total: {
                handler(newVal) {
                    const findResult = this.options.find(x => x.text === '购物车')
                    if (findResult) {
                        findResult.info = newVal
                    }
                },
                immediate:true
            }

        },
        data() {
            return {
                goods_info: {},
                // 左侧按钮组的配置对象
                options: [{
                    icon: 'shop',
                    text: '店铺'
                }, {
                    icon: 'cart',
                    text: '购物车',
                    info: 0
                }],
                // 右侧按钮组的配置对象
                buttonGroup: [{
                        text: '加入购物车',
                        backgroundColor: '#ff0000',
                        color: '#fff'
                    },
                    {
                        text: '立即购买',
                        backgroundColor: '#ffa200',
                        color: '#fff'
                    }
                ]
            }
        },

        onLoad(options) {
            const goods_id = options.goods_id
            this.getGoodsDetail(goods_id)
        },
        methods: {
            ...mapMutations('m_cart', ['addToCart']),
            async getGoodsDetail(goods_id) {
                const {
                    data: res
                } = await uni.$http.get('/api/public/v1/goods/detail', {
                    goods_id
                })
                if (res.meta.status !== 200) return uni.$showMsg()

                res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,
                    '<img style="display:block;"').replace(/webp/g, 'jpg')

                this.goods_info = res.message
            },
            preview(i) {
                uni.previewImage({
                    current: i,
                    urls: this.goods_info.pics.map(x => x.pics_big)
                })
            },
            onClick(e) {
                if (e.content.text === '购物车') {
                    uni.switchTab({
                        url: '/pages/cart/cart'
                    })
                }
            },
            buttonClick(e) {
                if (e.content.text === '加入购物车') {
                    const goods = {
                        goods_id: this.goods_info.goods_id,
                        goods_name: this.goods_info.goods_name,
                        goods_price: this.goods_info.goods_price,
                        goods_count: 1,
                        goods_small_logo: this.goods_info.goods_small_logo,
                        goods_state: true
                    }

                    this.addToCart(goods)
                }
            }
        }
    }
</script>

<style lang="scss">
    swiper {
        height: 750rpx;

        image {
            width: 100%;
            height: 100%;
        }
    }

    .goods-info-box {
        padding: 10px;
        padding-right: 0;

        .price {
            color: #c00000;
            font-size: 18px;
            margin: 10px 0;
        }

        .goods-info-body {
            display: flex;
            justify-content: space-between;

            .goods-name {
                font-size: 13px;
                padding-right: 10px;
            }

            .favi {
                width: 120px;
                font-size: 12px;
                display: flex;
                flex-direction: column;
                justify-content: center;
                align-items: center;
                border-left: 1px solid #efefef;
                color: gray;
            }
        }

        .yf {
            margin: 10px 0;
            font-size: 12px;
            color: gray;
        }
    }

    .goods-detail-container {
        padding-bottom: 50px;
    }

    .goods_nav {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
    }
</style>